JPH064894B2 - Method for correcting meandering of steel strip - Google Patents
Method for correcting meandering of steel stripInfo
- Publication number
- JPH064894B2 JPH064894B2 JP60299287A JP29928785A JPH064894B2 JP H064894 B2 JPH064894 B2 JP H064894B2 JP 60299287 A JP60299287 A JP 60299287A JP 29928785 A JP29928785 A JP 29928785A JP H064894 B2 JPH064894 B2 JP H064894B2
- Authority
- JP
- Japan
- Prior art keywords
- steel strip
- roll
- meandering
- gas
- furnace
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、鋼帯および金属帯の連続焼鈍において、鋼帯
が連続焼鈍炉の操作側、駆動側へと左右に蛇行した時
に、ロール幅中央を真直ぐに鋼帯を通過せしめるための
蛇行矯正方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to continuous annealing of a steel strip and a metal strip, and when the steel strip meanders to the operating side and the driving side of a continuous annealing furnace, the roll width The present invention relates to a meandering straightening method for allowing a steel strip to pass straight through the center.
〔従来の技術〕 金属帯、特に、鋼帯においては冷間圧延後の焼きなまし
に連続焼鈍を用いることが、一般的になって来ている。
連続焼鈍炉は入出側設備と中央部に炉を持つ巨大なライ
ンで、多数のロールより構成されている。[Prior Art] In metal strips, particularly steel strips, it has become common to use continuous annealing for annealing after cold rolling.
The continuous annealing furnace is a huge line with an inlet and outlet facility and a furnace in the center, and is composed of many rolls.
このラインで、焼鈍中の鋼帯が操作側、駆動側（左右）
にずれる（蛇行する）と、通板の安定性がなくなるだけ
でなく、鋼帯が炉の壁に衝突して鋼帯にきずをつけた
り、ひどい場合は鋼帯が破断するという事故につなが
る。この蛇行は連続焼鈍炉へ入る鋼帯に片波の形状不良
のように、鋼帯幅方向ではっきりした左右非対象な原因
がある場合に発生するだけでなく、左右非対称な要因が
多少でも隠されていれば、狭い幅の鋼帯を通板する時
や、通板速度を高くした場合、通板張力を下げた場合、
ロールの凸クラウンを小さくした場合などには、発生し
易くなるものである。In this line, the steel strip being annealed is on the operating side and the driving side (left and right).
If the steel strip slips (meanders), the stability of the strip is not only lost, but also the steel strip collides with the wall of the furnace and scratches the steel strip, or in severe cases, the steel strip breaks. This meandering occurs not only when there is a clear left-right asymmetrical cause in the width direction of the steel strip, such as a one-sided shape defect in the steel strip entering the continuous annealing furnace, but also a factor of asymmetrical left-right concealment to some extent. If the steel strip has a narrow width, when the steel strip is threaded, when the strip speed is increased, or when the strip tension is lowered,
This is likely to occur when the convex crown of the roll is made small.
現状の連続焼鈍ライン内のロールとして、蛇行の自己矯
正効果をもつ幅中央に膨らみをつけた凸クラウンロール
を用いているのは、周知の事実である。It is a well-known fact that a convex crown roll having a bulge at the center of the width, which has a self-correcting effect of meandering, is used as a roll in the current continuous annealing line.
これは、第２図に示すようにテーパーのあるロール２に
鋼帯１を巻きつけていくと、板がロールの太い側に登っ
ていく現象を利用したもので、ロール径の大きい側が先
に進行しようとするため、この現象が発生する。This utilizes the phenomenon that when the steel strip 1 is wound around a taper roll 2 as shown in Fig. 2, the plate climbs to the thick side of the roll, and the side with the larger roll diameter comes first. This phenomenon occurs because it tries to proceed.
なお、第２図において、γはテーパー角度、Ｒはロール
半径、θはロール回転角度、Δуは移動量を示す。In FIG. 2, γ is a taper angle, R is a roll radius, θ is a roll rotation angle, and Δу is a movement amount.
凸ロールの場合は、近似的に幅中央でテーパーロールを
あわせた形になっているので、両側の板端部の板が幅中
央に寄ろうとし、それが、押し合った状態で平衡状態を
保つことになる。この押し合う力、すなわち、復元力
は、ロールと板の摩擦力、すなわち、摩擦係数と張力に
よる面圧に比例すると考えられる。なんらかの原因で蛇
行すると、テーパー部分にある左右の板幅が変化する。
左右のテーパー部に乗った鋼帯の摩擦力は蛇行した側の
面積の方が大きいため、もとに戻る復元力を発生させ
る。このため、十分に大きい凸クラウンロールさえ採用
できれば連続焼鈍炉での蛇行矯正装置は不要になる。In the case of a convex roll, the taper rolls are approximately combined in the center of the width, so the plates at the ends of the plates on both sides try to move closer to the center of the width, and when they are pressed together, the equilibrium state is reached. Will keep. This pressing force, that is, the restoring force is considered to be proportional to the frictional force between the roll and the plate, that is, the friction coefficient and the surface pressure due to the tension. When meandering for some reason, the width of the left and right plates in the taper part changes.
Since the frictional force of the steel strips on the left and right taper portions is larger on the meandering side, a restoring force that returns to the original is generated. Therefore, if only a sufficiently large convex crown roll can be adopted, the meandering straightening device in the continuous annealing furnace becomes unnecessary.
しかし、実際には、大きい凸クラウンロールを連続焼鈍
炉に使用すると、ヒートバックルと呼ばれる絞りこみ疵
が発生するため、この凸クラウンの大きさは厳しく制限
されている。実用に供されている連続焼鈍炉では、ヒー
トバックルが発生しない限界まで、凸クラウンの大きさ
を下げており、凸クラウンロールによる強い蛇行防止効
果はあまり期待出来ない状態である。このため、鋼帯の
形状が乱れて来ると左右非対称の力が発生し、すぐに蛇
行につながる不都合を生じている。However, in practice, when a large convex crown roll is used in a continuous annealing furnace, a squeezing flaw called a heat buckle occurs, so that the size of this convex crown is strictly limited. In a continuous annealing furnace that is practically used, the size of the convex crown is reduced to the limit where heat buckle does not occur, and the strong meandering prevention effect of the convex crown roll cannot be expected so much. For this reason, when the shape of the steel strip is disturbed, a left-right asymmetric force is generated, which causes an inconvenience that immediately leads to meandering.
そこで、連続焼鈍炉では、炉の入出側、もしくは、炉内
に鋼帯が中央を通るように蛇行を矯正する機構を備えて
いる。現状、実用的に用いられている蛇行矯正装置はロ
ールを左右、または、前後に傾けるロール傾動方式であ
るが、後でのべる理由により、炉内の蛇行矯正装置は、
殆ど使用できない。Therefore, the continuous annealing furnace is provided with a mechanism for correcting the meandering so that the steel strip passes through the center on the inlet / outlet side of the furnace or inside the furnace. Currently, the meandering straightening device that is practically used is a roll tilting method that tilts the roll to the left or right, or back and forth, but for the reason to be described later, the meandering straightening device in the furnace is
Almost unusable.
ロール傾動による蛇行矯正原理はロールを傾けることに
よって、鋼帯の進行方向とロール回転軸が直角で無くな
る（鋼帯進行方向とロール表面速度方向が平行で無くな
り、角度を持つ）ため生じる糸巻き効果、つまり、鋼帯
と回転軸のなす角度が直角より小さくなった方に鋼帯が
移動しながら巻き付いて行く効果を利用している。The principle of meandering correction by roll tilting is that the winding direction of the steel strip disappears at a right angle to the roll rotation axis (the steel strip moving direction and the roll surface velocity direction are not parallel and has an angle), which is a winding effect. In other words, the effect of winding the steel strip while moving toward the direction where the angle between the steel strip and the rotation axis becomes smaller than the right angle is used.
ロール傾動方式の蛇行矯正能力は大きいが、蛇行修正中
は鋼帯の左右の張力差が大きくなり、極端な場合、左右
のどちらかが浮きあがり、片方だけがロールに接するよ
うになったりするため、連続焼鈍炉内のように鋼帯が高
温のため軟化している所では、鋼帯にきずがはいりやす
く、実用上、高温の炉内では使用できない。Although the roll tilting method has a large meandering correction capability, the tension difference between the left and right of the steel strip becomes large during the meandering correction, and in extreme cases, either the left or right side will float up and only one side will come into contact with the roll. In a continuous annealing furnace where the steel strip is softened due to a high temperature, the steel strip is easily scratched and cannot be practically used in a high temperature furnace.
一方、連続焼鈍でつくる材質、寸法が多様化するにつれ
て、軟質化、薄物化、広幅化の要求が進んでいる。この
ような材料を焼鈍するには、高温の炉内で発生するヒー
トバックルと呼ばれる鋼帯のきず防止の観点から、凸の
ロールクラウンの低下、低い通板張力などが要求され、
益々蛇行し易い方向になってきており、今迄以上に、高
温の炉内でも使用できる蛇行防止策が必要となってい
る。On the other hand, demands for softening, thinning, and widening are increasing as the materials and dimensions made by continuous annealing are diversified. In order to anneal such a material, from the viewpoint of preventing damage to the steel strip called heat buckle that occurs in a high-temperature furnace, a decrease in the convex roll crown, low strip tension, etc. are required,
It is becoming more and more easy to meander, and there is a need for a meandering prevention measure that can be used even in high-temperature furnaces.
本発明は、連続焼鈍炉において鋼帯の蛇行矯正装置能力
が高く、且つ高温の軟らかい鋼帯に適用しても、疵が発
生させない方法で蛇行を矯正しようとするものである。The present invention has a high ability of a meandering straightening device for steel strips in a continuous annealing furnace, and is intended to straighten meandering by a method that does not cause flaws even when applied to a high temperature soft steel strip.
本発明は、連続焼鈍炉において、ハースロールに隣接し
てガスを吹き出すノズルを鋼帯の幅方向両端に具備せし
め、少くとも鋼帯がロール端に寄った側のノズルから、
他方の端部のノズルよりもガスの吹き込み量を多くする
ように鋼帯とロールの接触部分へガスを吹き込み、鋼帯
の蛇行を矯正することを特徴とする鋼帯の蛇行矯正方法
を要旨とするものである。The present invention, in the continuous annealing furnace, a nozzle for blowing gas adjacent to the hearth roll is provided at both ends in the width direction of the steel strip, and at least from the nozzle on the side where the steel strip is close to the roll end,
The gist of a steel strip meandering method is characterized by straightening the meandering of the steel strip by blowing gas into the contact area between the steel strip and the roll so that the amount of gas blown in is larger than at the nozzle at the other end. To do.
本発明では、ロール傾動による蛇行修正機能と異なり、
ロール自体は平行のままとし、ガスをロールと鋼帯の間
に幅方向で分布を持たせて吹き込む（鋼帯の片側のみに
ガスを吹き込むか、両側に吹き込む時は、左右でガスを
吹き込み量を変える）ことにより、ロールと鋼帯の接触
状態を幅方向で左右非対称にすることで、蛇行を矯正す
るものである。In the present invention, unlike the meandering correction function by roll tilting,
The roll itself remains parallel, and the gas is blown with a distribution in the width direction between the roll and the steel strip (gas is blown on only one side of the steel strip, or when it is blown on both sides, the amount of gas blown left and right By changing), the contact state between the roll and the steel strip is made asymmetrical in the width direction, thereby correcting the meandering.
ロールと鋼帯の間に吹き込まれたガスは、鋼帯端や、吹
き込み部分から大部分が逃げるとともに、一部のガスは
鋼帯ロールの間から、ロール出側へと逃げると考えられ
るが、ガスの吹き込みが左右で非対称のため、鋼帯を幅
方向に動かす力が発生する。Most of the gas blown between the roll and the steel strip escapes from the steel strip end or the blown portion, and some gas is thought to escape from between the steel strip rolls to the roll exit side, Since the blowing of gas is asymmetric on the left and right, a force that moves the steel strip in the width direction is generated.
まず、鋼帯端から逃げるガスの反作用により、ガスを吹
き込み側から、吹き込みの無い方へ鋼帯を押す力が発生
する。First, due to the reaction of the gas that escapes from the end of the steel strip, a force is generated that pushes the steel strip from the side where the gas is blown to the side where there is no blowing.
次ぎに、ガス吹き込み圧によって、鋼帯が少し持ち上が
るため、吹き込み側の張力が大きくなり、左右の張力差
が発生し、これが、鋼帯に回転モーメントを与える。吹
き込み圧で鋼帯が持ち上がれば、ロールと鋼帯が接触を
開始する位置は左右で変わる効果もある。Next, due to the gas blowing pressure, the steel strip is lifted a little, so that the tension on the blowing side is increased, and a tension difference between the left and right sides is generated, which gives the steel strip a rotational moment. If the steel strip is lifted up by the blowing pressure, the position at which the roll and the steel strip start contacting can be changed left and right.
薄い空気膜がロールと鋼帯の間にできれば、鋼帯とロー
ルの摩擦係数が減少する可能性があり、凸クラウンロー
ルでは自己蛇行矯正効果から、幅方向での張力分布が一
様の場合は、ガスを吹き込んだ方に鋼帯を動かす力が働
く可能性がある。If a thin air film is formed between the roll and the steel strip, the friction coefficient between the steel strip and the roll may decrease. , The force that moves the steel strip may act on the person who blows the gas.
これら以外の力もあると考えられるが、理論的には、ど
の力が大きく、左右のどの方向に鋼帯がどれぐらいの早
さで動くのか、予測するのは難しい。しかし、蛇行矯正
装置としては、左右の非対称を利用し、再現性があって
首尾一貫して鋼帯を幅方向で移動することさえ分かれば
十分である。そこで、実施例に示した実験装置で、本発
明の蛇行矯正能力を調査した。It is thought that there are forces other than these, but theoretically it is difficult to predict which force is large and in which direction the steel strip moves in the left and right directions. However, it is sufficient for the meandering correction device to utilize the asymmetry of the left and right sides, reproducibly and consistently moving the steel strip in the width direction. Therefore, the meandering correction ability of the present invention was investigated using the experimental apparatus shown in the examples.
結果は、蛇行矯正個所のロール駆動の有無、ロールが凸
クラウンか、フラットか、吹き込むガス圧が大か小かに
よらず、いつも、ガスを吹き込んだのと反対側へ移動す
ることが確かめられた。It was confirmed that the result always moves to the opposite side to the gas blown regardless of whether the meandering correction part is driven by the roll, whether the roll is a convex crown, flat, or whether the gas pressure to blow is large or small. It was
すなわち、鋼帯幅方向にガスの引き込み装置を備え、鋼
帯が蛇行して中心線から外れた場合、鋼帯がロール端に
寄った側より、ガスを鋼帯とロールの接触部分に吹き込
むことで、蛇行を矯正し鋼帯を幅中心に保つことが出来
る。That is, a gas drawing device is provided in the width direction of the steel strip, and when the steel strip meanders and deviates from the center line, gas is blown into the contact portion between the steel strip and the roll from the side closer to the roll end. Then, it is possible to correct the meandering and keep the steel strip at the width center.
このガス温度は、蛇行矯正を炉外で行う場合、および、
鋼帯が冷えて良い所では、室温でよいが、高温の炉内で
は、鋼帯の温度分布を乱さないようにする必要がある。
また、炉内の鋼帯の蛇行を矯正する際は酸化しないガス
組成、例えば雰囲気ガス（窒素ガス，水素ガス等）にす
るのも当然必要なことであるが酸化を考慮しないところ
では空気、燃焼排ガス等のガスを用いてもよい。又ガス
を吹き込むノズルは複数個もうけるものであるがスリッ
ト状にしたノズル等であれば１個だけでもよい。This gas temperature is when the meandering correction is performed outside the furnace, and
Room temperature is acceptable where the steel strip can be cooled, but it is necessary not to disturb the temperature distribution of the steel strip in a high temperature furnace.
In addition, when correcting the meandering of the steel strip in the furnace, it is of course necessary to use a gas composition that does not oxidize, for example, an atmospheric gas (nitrogen gas, hydrogen gas, etc.). Gas such as exhaust gas may be used. Although a plurality of nozzles for blowing gas are provided, only one nozzle may be used as long as it is a slit-shaped nozzle or the like.
ガスの量は一定でもよいが、蛇行をはやく矯正するに
は、ガス量を増やせばよい。The amount of gas may be constant, but the amount of gas may be increased to quickly correct the meandering.
厚さ0.6mmで板幅１４００mmの加工用の軟質鋼帯の連続
焼鈍において、ハースロール径８００mm、ロール胴長さ
２０００mmからなる連続焼鈍設備において、均熱帯での
蛇行矯正を本発明による方法で実施した。（第１図） 均熱帯のハースロール６は、幅の中央部の６００mm幅が
円筒ロールで、そこから、左右のロール胴端まで７００
mmの間で直径で0.5mm径小さくなるテーパーロールとし
たいわゆる凸クラウンロールである。ロールはすべて駆
動しており、通板速度は１２０ｍ／minである。In continuous annealing of a soft steel strip for processing having a thickness of 0.6 mm and a plate width of 1400 mm, a meandering correction in the soaking zone is performed by the method according to the present invention in a continuous annealing equipment having a hearth roll diameter of 800 mm and a roll body length of 2000 mm. did. (Fig. 1) The soothing hearth roll 6 is a cylindrical roll with a width of 600 mm at the center of the width.
It is a so-called convex crown roll which is a taper roll whose diameter is reduced by 0.5 mm between mm. All the rolls are driven, and the strip running speed is 120 m / min.
実験は、炉内の鋼帯端位置が観測できる工業用テレビ
（ＩＴＶ）９にて、蛇行を検出し、その蛇行検出に基づ
いて、雰囲気ガス８を吹き込むことにした。雰囲気ガス
８は、該当個所の炉内ガスをそのまま使用し、温度低下
によって、鋼帯の温度分布を乱さないよう考慮した。In the experiment, an industrial television (ITV) 9 capable of observing the position of the steel strip inside the furnace was used to detect meandering, and based on the meandering detection, the atmospheric gas 8 was blown. As the atmosphere gas 8, the furnace gas at the relevant location was used as it was, and it was considered that the temperature distribution of the steel strip would not be disturbed by the temperature drop.
雰囲気ガスのノズル７は、１５００mmの鋼帯幅で、両側
５００mmの端の部分だけに設置した。ガスノズル７は１
０mmの間隔を置いて複数個設け、３mmの穴をあけ、ガス
圧を0.1〜1.5気圧の範囲で変更して、ガスの流量を変更
できるようにした。The atmosphere gas nozzle 7 had a steel strip width of 1500 mm and was installed only at the end portions of 500 mm on both sides. Gas nozzle 7 is 1
A plurality of 3 mm holes were provided at intervals of 0 mm and the gas pressure was changed in the range of 0.1 to 1.5 atm so that the gas flow rate could be changed.
実験１（第３図）は、ＩＴＶによる蛇行量と鋼帯の進行
量との関係を示すもので、鋼帯の蛇行が駆動側に４０mm
発生した所（第３図のＡ点）で、蛇行した方の駆動側か
ら雰囲気ガスを各ノズルあたり、４０／min流した結
果、蛇行が矯正され、元の中心線に戻っている結果が得
られた。また、第３図のＢ点の所で、ガス流量をノズル
あたり、６０／minにした所、蛇行矯正がききすぎ
て、今度は、操作側に大きく蛇行した。第３図のＣ点
で、雰囲気ガスの吹き込みを止めた所、この実験を開始
したときの蛇行程度と同じ速度で、駆動側への蛇行が始
まった。Experiment 1 (Fig. 3) shows the relationship between the meandering amount by ITV and the traveling amount of the steel strip. The meandering of the steel strip is 40 mm on the driving side.
At the place where it occurred (point A in Fig. 3), as a result of flowing the atmospheric gas from the meandering driving side to each nozzle at 40 / min, the meandering was corrected and the result returned to the original center line. Was given. Further, at point B in FIG. 3, when the gas flow rate per nozzle was set to 60 / min, the meandering correction was too tight, and the meandering to the operating side was made this time. At point C in FIG. 3, when the blowing of the atmospheric gas was stopped, the meandering to the drive side started at the same speed as the meandering when the experiment was started.
実験２（第４図）は、蛇行していない状態で、第４図の
Ａ点より、操業側のガス圧力を1.5気圧として雰囲気ガ
スを流した結果で、駆動側への鋼帯の移動が測定され
た。Experiment 2 (Fig. 4) is the result of flowing the atmospheric gas from point A in Fig. 4 with the gas pressure on the operating side set to 1.5 atm without the meandering. Was measured.
この実施例に示すように、確かに、本発明の方法で蛇行
が自由に制御できることが示された。As shown in this example, it has indeed been shown that the method of the invention allows the meandering to be freely controlled.
本実施例では、蛇行をＩＴＶ検出して、人手で雰囲気ガ
スの吹き込みを変更したが、これを自動検出、自動制御
にするのは、容易なことである。In the present embodiment, the meandering is detected by ITV and the blowing of the atmospheric gas is manually changed, but it is easy to automatically detect and control this.
本実施例は蛇行修正機能を、鋼帯の温度７５０℃で実施
したが、疵の発生、ヒートバックルの発生もなく、自由
に鋼帯を左右に動かすことが出来た。従来のロール傾動
方式の７５０℃での蛇行矯正は、疵が鋼帯にはいるた
め、炉入側での蛇行矯正のみが可能で、本発明のように
直接炉内での蛇行矯正は不可能であった。In this embodiment, the meandering correction function was carried out at a steel strip temperature of 750 ° C., but the steel strip could be freely moved to the left and right without the occurrence of flaws or heat buckles. With the conventional roll tilting method at 750 ° C., the meandering correction at the furnace entrance side is only possible because the flaws are present in the steel strip, so it is not possible to directly correct the meandering inside the furnace as in the present invention. Met.
（１）連続焼鈍炉内の高温の状態で、自由に蛇行を制御
できるため、炉内ロールに蛇行は発生し易いが、ヒート
バックル発生の恐れの少ないフラットロール、および、
クラウンの小さいロールを用いることができる。このた
め、連続焼鈍ラインの製造可能範囲を、薄物、広幅、か
つ、軟質側へ拡大できる。(1) Since the meandering can be freely controlled in a high temperature state in the continuous annealing furnace, the meandering is likely to occur in the furnace roll, but the flat roll is less likely to cause the heat buckle, and
Rolls with a small crown can be used. Therefore, the manufacturable range of the continuous annealing line can be expanded to a thin material, a wide width, and a soft side.
（２）本発明による蛇行矯正は、鋼帯とロールの接触部
分へガスを吹き込む方法のため、鋼帯にきずを付ける可
能性が低く、従来のロール傾動方式では、問題の多かっ
た高温での蛇行矯正が可能になった。(2) Since the meandering correction according to the present invention is a method of blowing gas into the contact portion between the steel strip and the roll, the possibility of scratching the steel strip is low, and the conventional roll tilting method has a problem in high temperature. The meandering correction has become possible.
（３）ロールの近くに置くものはガスノズルだけであ
り、雰囲気ガスを流すポンプ以外に、動く部分がないの
で、高温の炉内での信頼性が高い。(3) Since only the gas nozzle is placed near the roll, and there is no moving part other than the pump for flowing the atmospheric gas, the reliability in the high temperature furnace is high.
（４）ガスの吹き込み開閉で制御するので、応答性が早
い。(4) The response is quick because the control is performed by opening / closing the gas.
（５）本発明は蛇行修正が必要な時だけ、ガスを使えば
よいので、ロールきずとかヒートバックル防止を狙って
ガスで鋼帯を前面的に支える機構の通板方法にくらべれ
ば、ランニングコスト上、非常に有利である。また、蛇
行修正機構は全部のロールに必要なわけでなく、設備費
が少なくてすむ利点を持つ。(5) In the present invention, the gas can be used only when the meandering correction is necessary. Therefore, the running cost can be reduced as compared with the method of passing the steel strip in front by the gas for the purpose of preventing roll flaws and heat buckle. Moreover, it is very advantageous. Further, the meandering correction mechanism is not required for all rolls, and has an advantage that the equipment cost can be reduced.
（６）本発明による蛇行矯正は、連続焼鈍炉に限らず、
通常の鋼帯を扱う設備に適用可能である。(6) The meandering correction according to the present invention is not limited to the continuous annealing furnace,
It can be applied to equipment that handles ordinary steel strips.
第１図は本発明の実施例の説明図、第２図はテーパーロ
ールによる鋼帯の求心作用を求めた実験で、鋼帯とロー
ルが滑らないようにした時の、ロールの回転と鋼帯がロ
ールの太い側に移動する関係を示す図、第３図および第
４図は、蛇行の矯正の実験結果を示す図で、横軸は鋼帯
の移動距離、縦軸は鋼帯の蛇行量をそれぞれ示す。 図中の記号は、 １：鋼帯 ２：テーパーロール、半径：Ｒ（mm） ６：ハースロール ７：蛇行修正用ノズル ８：雰囲気ガス（炉内温度と同等にする）FIG. 1 is an explanatory view of an embodiment of the present invention, and FIG. 2 is an experiment for determining the centripetal action of a steel strip by a taper roll. The rotation of the roll and the steel strip when the steel strip and the roll are prevented from slipping. Fig. 3 and Fig. 4 showing the relationship in which the sheet moves to the thick side of the roll are the results of the experiment for correcting the meandering, where the horizontal axis is the moving distance of the steel strip and the vertical axis is the amount of meandering of the steel strip. Are shown respectively. The symbols in the figure are: 1: Steel strip 2: Tapered roll, radius: R (mm) 6: Hearth roll 7: Nozzle for meandering correction 8: Atmosphere gas (equal to furnace temperature)
Claims (1)
してガスを吹き出すノズルを鋼帯の幅方向両端に具備せ
しめ、少くとも鋼帯がロール端に寄った側のノズルか
ら、他方の端部のノズルよりもガスの吹き込み量を多く
するように鋼帯とロールの接触部分へガスを吹き込み、
鋼帯の蛇行を矯正することを特徴とする鋼帯の蛇行矯正
方法。1. In a continuous annealing furnace, nozzles for blowing gas adjacent to a hearth roll are provided at both ends in the width direction of the steel strip, and at least from the nozzle on the side where the steel strip is close to the roll end to the other end. Blow gas to the contact area between the steel strip and the roll so that the amount of gas blown is larger than that of
A method for straightening a meander of a steel strip, which comprises correcting the meander of a strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60299287A JPH064894B2 (en) | 1985-12-28 | 1985-12-28 | Method for correcting meandering of steel strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60299287A JPH064894B2 (en) | 1985-12-28 | 1985-12-28 | Method for correcting meandering of steel strip |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62158827A JPS62158827A (en) | 1987-07-14 |
| JPH064894B2 true JPH064894B2 (en) | 1994-01-19 |
Family
ID=17870577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60299287A Expired - Lifetime JPH064894B2 (en) | 1985-12-28 | 1985-12-28 | Method for correcting meandering of steel strip |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH064894B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0270023A (en) * | 1988-09-02 | 1990-03-08 | Sumitomo Metal Ind Ltd | Method of passing thin steel strip |
| KR100478724B1 (en) * | 2000-12-15 | 2005-03-24 | 주식회사 포스코 | Correction Apparatus of Plate Slanting in Vertical Looper |
| US11807479B2 (en) | 2018-10-31 | 2023-11-07 | Jfe Steel Corporation | Device for correcting meandering in non-contact conveyance for strip material |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS539163A (en) * | 1976-07-13 | 1978-01-27 | Seiko Epson Corp | Integrated circuit having double functions of watch and calculator |
-
1985
- 1985-12-28 JP JP60299287A patent/JPH064894B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62158827A (en) | 1987-07-14 |
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